﻿using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using Maticsoft.DBUtility;//Please add references
namespace XueMeng.DAL
{
	/// <summary>
	/// 数据访问类:MessageService
	/// </summary>
	public partial class MessageService
	{
		public MessageService()
		{}
		#region  Method

		/// <summary>
		/// 得到最大ID
		/// </summary>
		public int GetMaxId()
		{
		return DbHelperSQL.GetMaxID("M_Id", "Message"); 
		}

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int M_Id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from Message");
			strSql.Append(" where M_Id=@M_Id");
			SqlParameter[] parameters = {
					new SqlParameter("@M_Id", SqlDbType.Int,4)
			};
			parameters[0].Value = M_Id;

			return DbHelperSQL.Exists(strSql.ToString(),parameters);
		}


		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(XueMeng.Model.Message model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into Message(");
			strSql.Append("M_Context,M_Time,E_Id_S,E_Id_C,Enable)");
			strSql.Append(" values (");
			strSql.Append("@M_Context,@M_Time,@E_Id_S,@E_Id_C,@Enable)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@M_Context", SqlDbType.Text),
					new SqlParameter("@M_Time", SqlDbType.DateTime),
					new SqlParameter("@E_Id_S", SqlDbType.Int,4),
					new SqlParameter("@E_Id_C", SqlDbType.Int,4),
					new SqlParameter("@Enable", SqlDbType.Int,4)};
			parameters[0].Value = model.M_Context;
			parameters[1].Value = model.M_Time;
			parameters[2].Value = model.E_Id_S;
			parameters[3].Value = model.E_Id_C;
			parameters[4].Value = model.Enable;

			object obj = DbHelperSQL.GetSingle(strSql.ToString(),parameters);
			if (obj == null)
			{
				return 0;
			}
			else
			{
				return Convert.ToInt32(obj);
			}
		}
		/// <summary>
		/// 更新一条数据
		/// </summary>
		public bool Update(XueMeng.Model.Message model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("update Message set ");
			strSql.Append("M_Context=@M_Context,");
			strSql.Append("M_Time=@M_Time,");
			strSql.Append("E_Id_S=@E_Id_S,");
			strSql.Append("E_Id_C=@E_Id_C,");
			strSql.Append("Enable=@Enable");
			strSql.Append(" where M_Id=@M_Id");
			SqlParameter[] parameters = {
					new SqlParameter("@M_Context", SqlDbType.Text),
					new SqlParameter("@M_Time", SqlDbType.DateTime),
					new SqlParameter("@E_Id_S", SqlDbType.Int,4),
					new SqlParameter("@E_Id_C", SqlDbType.Int,4),
					new SqlParameter("@Enable", SqlDbType.Int,4),
					new SqlParameter("@M_Id", SqlDbType.Int,4)};
			parameters[0].Value = model.M_Context;
			parameters[1].Value = model.M_Time;
			parameters[2].Value = model.E_Id_S;
			parameters[3].Value = model.E_Id_C;
			parameters[4].Value = model.Enable;
			parameters[5].Value = model.M_Id;

			int rows=DbHelperSQL.ExecuteSql(strSql.ToString(),parameters);
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		/// <summary>
		/// 删除一条数据
		/// </summary>
		public bool Delete(int M_Id)
		{
			
			StringBuilder strSql=new StringBuilder();
			strSql.Append("delete from Message ");
			strSql.Append(" where M_Id=@M_Id");
			SqlParameter[] parameters = {
					new SqlParameter("@M_Id", SqlDbType.Int,4)
			};
			parameters[0].Value = M_Id;

			int rows=DbHelperSQL.ExecuteSql(strSql.ToString(),parameters);
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		/// <summary>
		/// 批量删除数据
		/// </summary>
		public bool DeleteList(string M_Idlist )
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("delete from Message ");
			strSql.Append(" where M_Id in ("+M_Idlist + ")  ");
			int rows=DbHelperSQL.ExecuteSql(strSql.ToString());
			if (rows > 0)
			{
				return true;
			}
			else
			{
				return false;
			}
		}


		/// <summary>
		/// 得到一个对象实体
		/// </summary>
		public XueMeng.Model.Message GetModel(int M_Id)
		{
			
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select  top 1 M_Id,M_Context,M_Time,E_Id_S,E_Id_C,Enable from Message ");
			strSql.Append(" where M_Id=@M_Id");
			SqlParameter[] parameters = {
					new SqlParameter("@M_Id", SqlDbType.Int,4)
			};
			parameters[0].Value = M_Id;

			XueMeng.Model.Message model=new XueMeng.Model.Message();
			DataSet ds=DbHelperSQL.Query(strSql.ToString(),parameters);
			if(ds.Tables[0].Rows.Count>0)
			{
				if(ds.Tables[0].Rows[0]["M_Id"]!=null && ds.Tables[0].Rows[0]["M_Id"].ToString()!="")
				{
					model.M_Id=int.Parse(ds.Tables[0].Rows[0]["M_Id"].ToString());
				}
				if(ds.Tables[0].Rows[0]["M_Context"]!=null && ds.Tables[0].Rows[0]["M_Context"].ToString()!="")
				{
					model.M_Context=ds.Tables[0].Rows[0]["M_Context"].ToString();
				}
				if(ds.Tables[0].Rows[0]["M_Time"]!=null && ds.Tables[0].Rows[0]["M_Time"].ToString()!="")
				{
					model.M_Time=DateTime.Parse(ds.Tables[0].Rows[0]["M_Time"].ToString());
				}
				if(ds.Tables[0].Rows[0]["E_Id_S"]!=null && ds.Tables[0].Rows[0]["E_Id_S"].ToString()!="")
				{
					model.E_Id_S=int.Parse(ds.Tables[0].Rows[0]["E_Id_S"].ToString());
				}
				if(ds.Tables[0].Rows[0]["E_Id_C"]!=null && ds.Tables[0].Rows[0]["E_Id_C"].ToString()!="")
				{
					model.E_Id_C=int.Parse(ds.Tables[0].Rows[0]["E_Id_C"].ToString());
				}
				if(ds.Tables[0].Rows[0]["Enable"]!=null && ds.Tables[0].Rows[0]["Enable"].ToString()!="")
				{
					model.Enable=int.Parse(ds.Tables[0].Rows[0]["Enable"].ToString());
				}
				return model;
			}
			else
			{
				return null;
			}
		}

		/// <summary>
		/// 获得数据列表
		/// </summary>
		public DataSet GetList(string strWhere)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select M_Id,M_Context,M_Time,E_Id_S,E_Id_C,Enable ");
			strSql.Append(" FROM Message ");
			if(strWhere.Trim()!="")
			{
				strSql.Append(" where "+strWhere);
			}
			return DbHelperSQL.Query(strSql.ToString());
		}

		/// <summary>
		/// 获得前几行数据
		/// </summary>
		public DataSet GetList(int Top,string strWhere,string filedOrder)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select ");
			if(Top>0)
			{
				strSql.Append(" top "+Top.ToString());
			}
			strSql.Append(" M_Id,M_Context,M_Time,E_Id_S,E_Id_C,Enable ");
			strSql.Append(" FROM Message ");
			if(strWhere.Trim()!="")
			{
				strSql.Append(" where "+strWhere);
			}
			strSql.Append(" order by " + filedOrder);
			return DbHelperSQL.Query(strSql.ToString());
		}

		/// <summary>
		/// 获取记录总数
		/// </summary>
		public int GetRecordCount(string strWhere)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) FROM Message ");
			if(strWhere.Trim()!="")
			{
				strSql.Append(" where "+strWhere);
			}
			object obj = DbHelperSQL.GetSingle(strSql.ToString());
			if (obj == null)
			{
				return 0;
			}
			else
			{
				return Convert.ToInt32(obj);
			}
		}
		/// <summary>
		/// 分页获取数据列表
		/// </summary>
		public DataSet GetListByPage(string strWhere, string orderby, int startIndex, int endIndex)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("SELECT * FROM ( ");
			strSql.Append(" SELECT ROW_NUMBER() OVER (");
			if (!string.IsNullOrEmpty(orderby.Trim()))
			{
				strSql.Append("order by T." + orderby );
			}
			else
			{
				strSql.Append("order by T.M_Id desc");
			}
			strSql.Append(")AS Row, T.*  from Message T ");
			if (!string.IsNullOrEmpty(strWhere.Trim()))
			{
				strSql.Append(" WHERE " + strWhere);
			}
			strSql.Append(" ) TT");
			strSql.AppendFormat(" WHERE TT.Row between {0} and {1}", startIndex, endIndex);
			return DbHelperSQL.Query(strSql.ToString());
		}

		/*
		/// <summary>
		/// 分页获取数据列表
		/// </summary>
		public DataSet GetList(int PageSize,int PageIndex,string strWhere)
		{
			SqlParameter[] parameters = {
					new SqlParameter("@tblName", SqlDbType.VarChar, 255),
					new SqlParameter("@fldName", SqlDbType.VarChar, 255),
					new SqlParameter("@PageSize", SqlDbType.Int),
					new SqlParameter("@PageIndex", SqlDbType.Int),
					new SqlParameter("@IsReCount", SqlDbType.Bit),
					new SqlParameter("@OrderType", SqlDbType.Bit),
					new SqlParameter("@strWhere", SqlDbType.VarChar,1000),
					};
			parameters[0].Value = "Message";
			parameters[1].Value = "M_Id";
			parameters[2].Value = PageSize;
			parameters[3].Value = PageIndex;
			parameters[4].Value = 0;
			parameters[5].Value = 0;
			parameters[6].Value = strWhere;	
			return DbHelperSQL.RunProcedure("UP_GetRecordByPage",parameters,"ds");
		}*/

		#endregion  Method
	}
}

